You’re a genius if you can find the hidden rogue letter in this optical illusion in under five seconds

YOU could be a genius if you can find the rogue letter hidden in this optical illusion in under five seconds.

This baffling brain teaser will put your IQ and eyesight to the test - and possibly even your patience.

But time is of the essence, as you have just five seconds to locate the imposter concealed among the dozens of P's.

Illusion enthusiasts are tasked with finding the letter F lurking somewhere in this mind-boggling image.

It is disguised by the army of P's in the black and orange brain teaser - but noticing it may be harder than you think.

Optical illusions are a fantastic way to encourage your mind to think strategically and train your brain to concentrate.

But even some of the most enthusiastic puzzle lovers were left stumped by this quick challenge.

Did you manage to find it in time?

If you readjust your eyes for a second, you’ll be able to spot something suspicious on the right-hand side.

Take a closer look at the second bundle of P's from the right - more specifically, on the fourth row down.

The mischievous F is situated at the end of the row, which incredibly blended in among the letters.

If you're a fan of brain teasers, why not see if you can conquer some more of our challenges?

Test your eyesight with this tricky optical illusion which requires you to .

Or why not landscape in less than five seconds.